<template>
	<view class="content">
		<view class="navbar">
			<view v-for="(item, index) in navList" :key="index" class="nav-item" :class="{current: tabCurrentIndex === index}" @click="tabClick(index)">
				{{item.text}}
			</view>
		</view>

		<swiper :current="tabCurrentIndex" class="swiper-box" duration="300" @change="changeTab">
			<swiper-item class="tab-content" v-for="(tabItem,tabIndex) in navList" :key="tabIndex">
				<scroll-view class="list-scroll-content" scroll-y @scrolltolower="loadData">
					<!-- 空白页 -->
					<empty v-if="tabItem.loaded === true && tabItem.couponList.length === 0"></empty>
					<!-- 订单列表 -->
					<view v-for="(item,index) in tabItem.couponList" :key="index" class="order-item">
						<view class="tabRows" :class="item.verdue?'tabVerdue':''">
							<view class="price">
								<view class="money" v-if="item.free_type == 1">￥<text>{{item.coupon_price}}</text></view>
								<view class="money" v-else><text>{{item.coupon_price}}</text>折</view>
								<view class="note"><text v-if="item.price > 0">满{{item.price}}可用</text></view>
							</view>
							<view class="cont">
								<view class="tit">{{item.name}}</view>
								<view class="time">{{item.start_time}}至{{item.end_time}}</view>
							</view>
							<view class="btn" v-if="item.status == 0" @click="toUse">去使用</view>
							<view class="btn gray" v-else-if="item.status == 1">已使用</view>
							<view class="btn gray" v-else>已失效</view>
						</view>
					</view>
					<!-- 上拉显示更多 -->
					<uni-load-more :status="tabItem.loadingType"></uni-load-more>
				</scroll-view>
			</swiper-item>
		</swiper>
	</view>
</template> 

<script>
	import uniLoadMore from '@/components/uni-load-more/uni-load-more.vue';
	import empty from "@/components/empty";
	import Json from '@/Json';
	import {mapState} from 'vuex';
	export default {
		components: {
			uniLoadMore,
			empty
		},
		computed: {
			...mapState(['hasLogin','userInfo']),
		},
		data() {
			return {
				tabCurrentIndex: 0,
				navList: [{
						state: 0,
						text: '未使用',
						page:1,
						loadingType: 'more',
						couponList: []
					},
					{
						state: 1,
						text: '已使用',
						page:1,
						loadingType: 'more',
						couponList: []
					},
					{
						state: 2,
						text: '已过期',
						loadingType: 'more',
						page:1,
						couponList: []
					}
				],
			};
		},
		
		onLoad(options){
			/**
			 * 修复app端点击除全部订单外的按钮进入时不加载数据的问题
			 * 替换onLoad下代码即可
			 */
			this.tabCurrentIndex = +options.state;
			this.loadData()
		},
		 
		methods: {
			loadData:function(source){
				let index = this.tabCurrentIndex
				let navItem = this.navList[index]
				let state = navItem.state
				if(source === 'tabChange' && navItem.loaded === true){
					return false
				}
				if(navItem.loadingType === 'loading'){
					return false
				}
				navItem.loadingType = 'loading'
				var that = this
				setTimeout(()=>{
					let couponList = [];
					let _param = {
						page:navItem.page,
						size:10,
						status:navItem.state,
						token:that.userInfo.token
					}
					navItem.loadingType = 'noMore'
					that.$api.getUrl(that.$api._api.ApiUserCoupon, _param, function(res){
						couponList = res.data
				
						couponList.forEach(item=>{
							navItem.couponList.push(item);
						})
						that.navList[index].loaded = true
						if(couponList.length > 1){
							that.navList[index].page = navItem.page+1
						}
						that.navList[index].count = res.total
						if(res.total > navItem.couponList.length){
							navItem.loadingType = 'more';
						}else{
							navItem.loadingType = 'noMore';
						}
					}) 
				},600)	
			},
			//swiper 切换
			changeTab(e){
				this.tabCurrentIndex = e.target.current;
				this.loadData('tabChange');
			},
			//顶部tab点击
			tabClick(index){
				this.tabCurrentIndex = index;
			},
			toUse:function(){
				uni.navigateTo({
					url:'/pages/category/product/list'
				})
			}
		},
	}
</script>

<style lang="scss">
	.tabRows{
		display: flex;align-items: center;box-shadow: 0 0 10rpx rgba(0,0,0,0.05);padding:30rpx 20rpx;
		border-radius:10rpx;
		.price, .cont{font-size:24rpx;color:#999;border-right: 1rpx dashed #eee;margin-right:30rpx;}
		.price{
			text-align: center;padding-right:30rpx;
			.money{
				font-size:35rpx;color:#fa436a;
				text{font-size:45rpx;}
			}
		}
		.cont{
			flex: 1;
			.tit{font-size: 30rpx;font-weight: bold;color:#333;}
			.time{margin-top: 10rpx;}
		}
		.btn{font-size: 24rpx;width: 100rpx;height: 60rpx;background:#fa436a;text-align: center;
			line-height: 60rpx;color:#fff;cursor: pointer;}
		.gray{background:#ccc;}
	}
	
	.tabVerdue .price .money,.tabVerdue .price,.tabVerdue .cont,.tabVerdue .cont .tit{color:#ccc;}
	
	page, .content{
		background: $page-color-base;
		height: 100%;
	}
	.swiper-box{height: calc(100% - 40px);}
	.list-scroll-content{height: 100%;}
	.navbar{
		display: flex;
		height: 40px;
		padding: 0 5px;
		background: #fff;
		box-shadow: 0 1px 5px rgba(0,0,0,.06);
		position: relative;
		z-index: 10;
		.nav-item{
			flex: 1;
			display: flex;
			justify-content: center;
			align-items: center;
			height: 100%;
			font-size: 15px;
			color: $font-color-dark;
			position: relative;
			&.current{
				color: $base-color;
				&:after{
					content: '';
					position: absolute;
					left: 50%;
					bottom: 0;
					transform: translateX(-50%);
					width: 44px;
					height: 0;
					border-bottom: 2px solid $base-color;
				}
			}
		}
	}

	.order-item{
		display: flex;
		flex-direction: column;
		background: #fff;
		margin:30rpx 30rpx 0 30rpx;
		.i-top{
			display: flex;
			align-items: center;
			height: 80rpx;
			padding-right:30rpx;
			font-size: $font-base;
			color: $font-color-dark;
			position: relative;
			.time{
				flex: 1;
			}
			.state{
				color: $base-color;
			}
			.del-btn{
				padding: 10rpx 0 10rpx 36rpx;
				font-size: $font-lg;
				color: $font-color-light;
				position: relative;
				&:after{
					content: '';
					width: 0;
					height: 30rpx;
					border-left: 1px solid $border-color-dark;
					position: absolute;
					left: 20rpx;
					top: 50%;
					transform: translateY(-50%);
				}
			}
		}
		/* 多条商品 */
		.goods-box{
			height: 160rpx;
			padding: 20rpx 0;
			white-space: nowrap;
			.goods-item{
				width: 120rpx;
				height: 120rpx;
				display: inline-block;
				margin-right: 24rpx;
			}
			.goods-img{
				display: block;
				width: 100%;
				height: 100%;
			}
		}
		/* 单条商品 */
		.goods-box-single{
			display: flex;
			padding: 20rpx 0;
			.goods-img{
				display: block;
				width: 120rpx;
				height: 120rpx;
			}
			.right{
				flex: 1;
				display: flex;
				flex-direction: column;
				padding: 0 30rpx 0 24rpx;
				overflow: hidden;
				.title{
					font-size: $font-base + 2rpx;
					color: $font-color-dark;
					line-height: 1;
				}
				.attr-box{
					font-size: $font-sm + 2rpx;
					color: $font-color-light;
					padding: 10rpx 12rpx;
				}
				.price{
					font-size: $font-base + 2rpx;
					color: $font-color-dark;
					&:before{
						content: '￥';
						font-size: $font-sm;
						margin: 0 2rpx 0 8rpx;
					}
				}
			}
		}
		
		.price-box{
			display: flex;
			justify-content: flex-end;
			align-items: baseline;
			padding: 20rpx 30rpx;
			font-size: $font-sm + 2rpx;
			color: $font-color-light;
			.num{
				margin: 0 8rpx;
				color: $font-color-dark;
			}
			.price{
				font-size: $font-lg;
				color: $font-color-dark;
				&:before{
					content: '￥';
					font-size: $font-sm;
					margin: 0 2rpx 0 8rpx;
				}
			}
		}
		.action-box{
			display: flex;
			justify-content: flex-end;
			align-items: center;
			height: 100rpx;
			position: relative;
			padding-right: 30rpx;
		}
		.action-btn{
			width: 160rpx;
			height: 60rpx;
			margin: 0;
			margin-left: 24rpx;
			padding: 0;
			text-align: center;
			line-height: 60rpx;
			font-size: $font-sm + 2rpx;
			color: $font-color-dark;
			background: #fff;
			border-radius: 100px;
			&:after{
				border-radius: 100px;
			}
			&.recom{
				background: #fff9f9;
				color: $base-color;
				&:after{
					border-color: #f7bcc8;
				}
			}
		}
	}
	
	
	/* load-more */
	.uni-load-more {
		display: flex;
		flex-direction: row;
		height: 80rpx;
		align-items: center;
		justify-content: center
	}
	.load1,
	.load2,
	.load3 {
		height: 24px;
		width: 24px
	}
	
	.load2 {
		transform: rotate(30deg)
	}
	
	.load3 {
		transform: rotate(60deg)
	}
	
	.load1 view:nth-child(1) {
		animation-delay: 0s
	}
	
	.load2 view:nth-child(1) {
		animation-delay: .13s
	}
	
	.load3 view:nth-child(1) {
		animation-delay: .26s
	}
	
	.load1 view:nth-child(2) {
		animation-delay: .39s
	}
	
	.load2 view:nth-child(2) {
		animation-delay: .52s
	}
	
	.load3 view:nth-child(2) {
		animation-delay: .65s
	}
	
	.load1 view:nth-child(3) {
		animation-delay: .78s
	}
	
	.load2 view:nth-child(3) {
		animation-delay: .91s
	}
	
	.load3 view:nth-child(3) {
		animation-delay: 1.04s
	}
	
	.load1 view:nth-child(4) {
		animation-delay: 1.17s
	}
	
	.load2 view:nth-child(4) {
		animation-delay: 1.3s
	}
	
	.load3 view:nth-child(4) {
		animation-delay: 1.43s
	}
	
	@-webkit-keyframes load {
		0% {
			opacity: 1
		}
	
		100% {
			opacity: .2
		}
	}
</style>
